CN217844966U - Detection pin mechanism - Google Patents
Detection pin mechanism Download PDFInfo
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- CN217844966U CN217844966U CN202221476960.1U CN202221476960U CN217844966U CN 217844966 U CN217844966 U CN 217844966U CN 202221476960 U CN202221476960 U CN 202221476960U CN 217844966 U CN217844966 U CN 217844966U
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- detection
- hole
- detecting
- pin
- shape
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- 238000001514 detection method Methods 0.000 title claims abstract description 81
- 239000012780 transparent material Substances 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 3
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model discloses a detection pin mechanism, which comprises a base, a detection pin, a detection block and a cylindrical handle, wherein the base is provided with a D-shaped guide hole, the detection block is provided with a first center hole, and the cylindrical handle is provided with a second center hole; the detection pin is divided into three sections: d shape guide segment, cylinder canned paragraph, detection axle, the first centre bore of detecting the piece is passed to the D shape guide segment of detecting the round pin, until first centre bore and cylinder canned paragraph interference fit, it just fixes on detecting the round pin just to detect the piece like this, D shape guiding hole on the base is continued to be passed to the D shape guide segment that will detect the round pin, D shape guide segment and D shape guiding hole clearance fit, realize detecting the removal of round pin along D shape guiding hole axis direction, then the second centre bore interference fit of D shape guide segment and cylinder handle, cylinder handle just fixes on detecting the round pin this moment the utility model discloses simple structure, convenient operation, design benefit detects effectively, not only can detect the hole site degree, can also detect a profile degree.
Description
The technical field is as follows:
the utility model relates to an automobile parts detects technical field, especially relates to a detect round pin mechanism.
Background art:
when detecting the hole position of the automobile part, the detection pin is generally adopted for detection. The design method of the conventional detection pin comprises the following steps: the diameter d of the detection shaft of the detection pin is equal to the maximum solid aperture dimension Dmin of the hole to be detected minus the position degree T of the hole, namely: d = Dmin-T. But sometimes the hole position T differs very little from the hole diameter, even if the position is larger than the hole diameter. At this time, according to the design method of the conventional detection pin, the detection shaft diameter d (d = Dmin-T) of the detection pin is small or even negative. This brings about the following problems: when the diameter d of the detection shaft of the detection pin is small, the detection pin is easy to break during detection. The diameter d of the detection shaft of the detection pin is a negative value, which is impossible in reality and cannot be designed.
The utility model has the following contents:
the utility model aims to solve the technical problem that current automobile parts's hole position detects time measuring, and detection shaft diameter d when detecting the round pin is very little, bumps during the detection very easily absolutely. The detection pin mechanism has the advantages of simple structure, convenience in operation, ingenious design, effectiveness in detection and the like.
In order to achieve the purpose, the utility model provides a detection pin mechanism, which comprises a base, a detection pin, a detection block and a cylindrical handle, wherein the base is provided with a D-shaped guide hole, the detection block is provided with a first center hole, and the cylindrical handle is provided with a second center hole; the detection pin sequentially penetrates through the first center hole of the detection block and the D-shaped guide hole of the base and then is in interference fit with the second center hole of the circular handle.
Preferably, the detection pin is divided into three sections: d shape guide segment, cylinder canned paragraph, detection axle, the D shape guide segment that detects the round pin passes the first centre bore that detects the piece, until first centre bore and cylinder canned paragraph interference fit, it just fixes on detecting the round pin to detect the piece like this, will detect the D shape guide segment of round pin and continue to pass the D shape guiding hole on the base, D shape guide segment and D shape guiding hole clearance fit, realize detecting the removal of round pin along D shape guiding hole axis direction, then the second centre bore interference fit of D shape guide segment and cylinder handle, the cylinder handle is just fixed on detecting the round pin this moment.
Further, the diameter d of the detecting shaft 23 is equal to the sum of the minimum physical size Dmax of the hole to be detected and the position degree T of the hole to be detected, that is: d = Dmax + T.
Furthermore, the detection block is made of transparent materials, so that whether the end part of the detection shaft 23 can completely cover the hole to be detected or not can be conveniently observed through the detection block.
Compared with the prior art after the structure more than adopting, the utility model has the advantages of it is following: the utility model discloses simple structure, convenient operation, design benefit detects effectively. The defect caused by a design method of a conventional detection pin is overcome, and the hole position degree and the surface profile degree can be detected.
Description of the drawings:
the contents of the drawings and the reference numerals in the drawings are briefly described below
FIG. 1, a schematic view of a detection pin mechanism;
FIG. 2, an exploded view of the sensing pin mechanism;
FIG. 3, a schematic view of a detection pin;
fig. 4 is a schematic view of the detection pin mechanism when detecting a component.
Shown in the figure: 1. the detection device comprises a base, 2, a detection pin, 3, a detection block, 4, a round handle, 11, a D-shaped guide hole, 21, a D-shaped guide section, 22, a cylindrical fixing section, 23, a detection shaft, 31, a first center hole, 41 and a second center hole.
The specific implementation mode is as follows:
the following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings:
as shown in fig. 1-3, the present invention relates to a detection pin mechanism, which comprises a base 1, a detection pin 2, a detection block 3, and a cylindrical handle 4, wherein the base 1 is provided with a D-shaped guide hole 11, the detection block 3 is provided with a first center hole 31, and the cylindrical handle 4 is provided with a second center hole 41; the detection pin 2 is divided into three sections: a D-shaped guide section 21, a cylindrical fixing section 22 and a detection shaft 23.
The fit relationship of the detection pin mechanism is as follows:
as shown in fig. 2, the D-shaped guiding section 21 of the detecting pin 2 passes through the first central hole 31 of the detecting block 3 until the first central hole 31 is in interference fit with the cylindrical fixing section 22, so that the detecting block 3 is fixed on the detecting pin 2; then the D-shaped guide section 21 of the detection pin 2 continuously penetrates through the D-shaped guide hole 11 on the base 1, and the D-shaped guide section 21 is in clearance fit with the D-shaped guide hole 11 to realize the movement of the detection pin 2 along the axial direction of the guide hole 11; finally, the D-shaped guide section 21 is in interference fit with the second central hole 41 of the cylindrical handle 4, so that the cylindrical handle 4 is fixed on the detection pin 2. Through the above assembling operation, the assembled state shown in fig. 1 is formed.
Wherein detect round pin mechanism and detect the design point: according to the rules of geometric dimensions and tolerances, the diameter d of the detection shaft 23 is equal to the sum of the minimum physical dimension Dmax of the hole to be detected and the position degree T of the hole to be detected, namely: d = Dmax + T. During detection, if the end part of the detection shaft 23 can completely cover the hole to be detected, and the position offset of the hole to be detected is within the range of the position degree T, the position of the hole is judged to be qualified. Otherwise, the product is not qualified.
Wherein detect piece 3 and adopt transparent material, for example transparent organic glass, be convenient for see through the tip that detects piece observation detection axle 23 and whether can cover completely and wait to detect the hole.
When the surface where the hole to be detected is located needs to detect the surface profile, the detection is realized by the detection block 3. At this time, the length of the detection shaft 23 is denoted as L. I.e. the axial distance between the end of the detection shaft 23 and the detection mass 3 is L.
With reference to fig. 1 to 4, the detection method of the detection pin mechanism is as follows: fig. 4 has an automotive part (only a partial view of which is shown).
(1) Firstly, a part is positioned and clamped on a checking fixture (the checking fixture is not shown), and a detection pin mechanism is fixedly arranged at a corresponding position of the checking fixture.
(2) Detecting the position degree of the hole to be detected: the cylindrical handle 4 is held by hand, the detection pin 2 is pushed to the surface to be detected, no hole to be detected is formed in the surface to be detected through visual inspection, namely, the end part of the detection shaft 23 completely covers the hole to be detected, and the surface is qualified. Otherwise, the product is not qualified.
(3) Detecting the surface profile degree (the profile degree value is F) of the surface to be detected: the cylindrical handle 4 is held by hand, the detection pin 2 is pushed to the surface to be detected, and a through-no-go gauge or a plug gauge is used for measuring the gap between the surface to be detected and the detection block 3. The gap value is in the range of L- (F/2) to L + (F/2) and is qualified, otherwise, the gap value is unqualified.
The foregoing is illustrative of the preferred embodiments of the present invention only, and is not to be construed as limiting the claims. All the equivalent structures or equivalent flow changes made by using the contents of the specification and the attached drawings of the utility model are included in the patent protection scope of the utility model.
Claims (4)
1. A detection pin mechanism is characterized by comprising a base (1), a detection pin (2), a detection block (3) and a cylindrical handle (4), wherein a D-shaped guide hole (11) is formed in the base (1), a first center hole (31) is formed in the detection block (3), and a second center hole (41) is formed in the cylindrical handle (4); the detection pin (2) sequentially penetrates through a first center hole (31) of the detection block (3) and a D-shaped guide hole (11) of the base (1) and then is in interference fit with a second center hole (41) of the cylindrical handle (4).
2. A detection pin mechanism according to claim 1, characterised in that the detection pin (2) is divided into three sections: d shape guide segment (21), cylinder fixed segment (22), detect axle (23), D shape guide segment (21) of detecting round pin (2) pass first centre bore (31) of detecting piece (3), until first centre bore (31) and cylinder fixed segment (22) interference fit, detect like this that piece (3) just fix on detecting round pin (2), D shape guide segment (21) that will detect round pin (2) continue to pass D shape guiding hole (11) on base (1), D shape guide segment (21) and D shape guiding hole (11) clearance fit, realize detecting the removal of round pin (2) along D shape guiding hole (11) axis direction, then second centre bore (41) interference fit of D shape guide segment (21) and cylinder handle (4), cylinder handle (4) are just fixed on detecting round pin (2) this moment.
3. A detection pin mechanism according to claim 2, characterised in that the diameter d of the detection shaft (23) is equal to the sum of the minimum physical dimension Dmax of the hole to be detected and the hole position degree T to be detected, namely: d = Dmax + T.
4. The detecting pin mechanism according to claim 1, wherein the detecting block is made of transparent material, so that it is easy to observe through the detecting block whether the end of the detecting shaft (23) can completely cover the hole to be detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221476960.1U CN217844966U (en) | 2022-06-14 | 2022-06-14 | Detection pin mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221476960.1U CN217844966U (en) | 2022-06-14 | 2022-06-14 | Detection pin mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217844966U true CN217844966U (en) | 2022-11-18 |
Family
ID=84024979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221476960.1U Expired - Fee Related CN217844966U (en) | 2022-06-14 | 2022-06-14 | Detection pin mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217844966U (en) |
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2022
- 2022-06-14 CN CN202221476960.1U patent/CN217844966U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20221118 |
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| CF01 | Termination of patent right due to non-payment of annual fee |